<div dir="ltr"><div><div><div><div>Dear Forum,<br><br></div>I plotted phonon dispersion for Al_FCC as shown in example inside "PlotPhon" folder in 5.1 QE version. I tried with both conventional vectors and reciprocal vectors as given bellow<br><br>Reciprocal<br>1 0.000 0.000 0.000 G<br>50 0.500 -0.000 0.500 X<br>50 0.000 0.000 0.000 G<br>50 0.500 0.500 0.500 L<br>50 0.500 -0.000 0.500 X<br>50 0.750 0.250 0.500 W<br>50 0.500 0.500 0.500 L<br><br><br></div>conventional<br>1 0.000 0.000 0.000 G<br>50 1.000 0.000 0.000 X<br>50 1.000 1.000 1.000 G<br>50 0.500 0.500 0.500 L<br>50 1.000 0.000 0.000 X<br>50 1.000 0.500 0.000 W<br>50 0.500 0.500 0.500 L<br><br></div>After plotting i observed that the two plots are not same. Here i attached the both plots. I want to know why the difference between the two plots?<br><br></div><div>If i want to take a path by using xcrysden i can not get Gamma point as (1,1,1). How to convert conventional mode to reciprocal mode?<br><br><br></div><div>In journals people reporting only with reciprocal vectors. Can we report the phonon plot with conventional vectors path?<br><br></div><div>With conventional path only i am getting smooth plot, but with reciprocal i am getting sharp edges at high symmetry points. Why this difference?<br></div><div><br><br></div><div>Thank you very much in advance ...<br><br></div><div>Thanking you ..<br></div><div> <br></div><div><br><br></div> <br clear="all"><div><div><div><div><div><div><br>-- <br><div class="gmail_signature"><i>P.V.SREENIVASA REDDY</i><br><i>Research Scholar<br>Department of Physics </i><br><div><i>Indian Institute of Technology</i></div><div><i>Hyderabad</i></div></div>
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